org.freehep.util

Class DiscreteAngle

java.lang.Object

org.freehep.util.DiscreteAngle

public class DiscreteAngle
extends java.lang.Object

Calculates a discrete angle from an arbitrary angle, based on a set of given angles. The class calculates the angle by dividing 360 degrees into segments based on the discrete angles. It then will calculate the closest discrete angle for a given angle. Discrete angles can be added and removed. This class can be used to constrain the mouse movement (or its result) if one wants to draw under certain angles only.

Constructor Summary

Constructors

Constructor and Description
DiscreteAngle()

Method Summary

Modifier and Type	Method and Description
java.lang.Double	addAngle(double angle) Adds a discrete angle to the set.
double	getAngle(double angle) Returns the closest angle to any discrete angle in the set.
static void	main(java.lang.String[] args)
boolean	removeAngle(double angle) Removes a discrete angle from the set.
boolean	removeAngle(java.lang.Double angle) Removes a discrete angle from the set.
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DiscreteAngle

public DiscreteAngle()

Method Detail

getAngle

public double getAngle(double angle)

Returns the closest angle to any discrete angle in the set. Returns itself if the set is empty. Returns the only discrete angle if the set only contains one angle.

addAngle

public java.lang.Double addAngle(double angle)

Adds a discrete angle to the set.

removeAngle

public boolean removeAngle(double angle)

Removes a discrete angle from the set.

removeAngle

public boolean removeAngle(java.lang.Double angle)

Removes a discrete angle from the set.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

main

public static void main(java.lang.String[] args)